When a cat stops using the litter box — or never took to a new one — it is almost always trying to tell you something. The good news: the usual causes are simple to fix once you know what to check. Here is how to win them back, in order.
First, rule out a health issue
If your cat suddenly stops using a box they were happy with, or strains, cries, or pees just outside it, see a vet before anything else. Urinary infections, crystals and other medical problems often show up as litter-box trouble — and no amount of training fixes a health problem. Rule that out first.
Then work through the usual causes
1. Location
Cats want a box somewhere quiet, easy to reach, and away from their food and water. A box beside a noisy washing machine or in a busy hallway can be enough to put a cat off. Give them privacy and an easy exit — not a dead-end corner where they could feel trapped.
2. The litter itself
Most cats prefer a soft, fine-grained, unscented clumping litter — the heavy perfumes we like often repel them. Keep it a couple of inches deep so they can dig. If you changed brands recently, that alone can be the problem.
3. Keep it clean
Cats are fastidious. Scoop at least once a day and wash the box out regularly. A box that smells dirty to you is long past a cat’s limit, and a dirty box is one of the most common reasons a cat goes elsewhere.
4. The box itself
It should be big — about one-and-a-half times your cat’s length — with a low entry for kittens and senior cats. Some cats dislike hoods and liners. If you are shopping for a new one, see our litter box picks, and a litter mat underneath keeps tracking down.
5. One box per cat, plus one
In multi-cat homes, competition causes accidents. The rule is one box per cat plus a spare, spread around the home so no cat can guard them all.
6. Change things slowly
Switching litter, moving the box, or introducing a new one? Do it gradually. Put the new box next to the old one, or mix a little new litter into the old, and give your cat time to accept the change.
Cleaning up accidents
Clean any accident with an enzyme cleaner, not a regular household one. Ordinary cleaners leave a scent marker only your cat can smell, which draws them back to the same spot. Never rub their nose in it or punish them — it does not work and makes things worse.
FAQ
Why is my cat suddenly not using the litter box?
A sudden change often signals a health problem — see a vet first. If your cat is healthy, check for a dirty box, a new litter, or a stressful location.
What litter do most cats prefer?
A soft, fine-grained, unscented clumping litter, kept a couple of inches deep. Strong fragrances tend to put cats off.
How do I move the litter box to a new spot?
Move it a little at a time, or set up the new location beside the old box for a week before removing the original.
